Refill mechanism for fountain pens



April 29, 1924.

W. E. GUYOT REFILL MECHANISM FOR FOUNTAIN PENS Filed March 17. 1923 IllIl WITNESSES A TTHNE V8 Patented Apr,

STATESv Partnr carica.;

WALTER. E. eurer, orJJANEsvILLE, WISCONSIN, AssIGNoa ro man Pannen rnN co., .or JaNEsvrLLE, wIseoNsnv, A conronarron or wisconsin.

REFILL nncnamsm non. FOUNTAIN rims.

Application led March 17, 1923. Serial Na-25,917.

To all who/m. t may concern.' y

Be it known that I, WALTER E. GUYofr, a citizen ofthe United States, and a resident of Janesville, in the county of Rock andI State of Wisconsin, have invented a new and Improved Refill Mechanism for Fountain lPens,y of which the following is a full, clear, and exact description. The present invention relates to new and l@ useful improvements in fountain pens and it pertains, more particularly to a refill mechanism therefor.

It is one of the objects of the present invention "to provide a mechanism of the presser-bar type for. collapsing the sac of a fountain pen for the purpose of lling said sac with lnk. w It is a further object of the invention to construct a sac-collapsing Imechanism 2@ which can never assume the position of dead center.

It is a further object of lthe invention to v construct the mechanism so that it may be formed from heavy metal therefore rendering the device particularly adaptable for uselwith relatively heavy sacs.

Itis a further object of the invention to construct the mechanism in such a manner i that the presser bar has a pivotal connection with the resilient members which pivotal connection permits of a 1im1ted amount of sliding movement between the resilient members and the presser bar, thus adaptin the device to fountain pen barrels of various lengths and removlng the necessityof absolute accuracy in its manufacture.

It is a further object of the invention tov provide a mechanism in which the spring will have an inherent tendency to straighten without relying upon the action of the sac for this feature.

It is a further object of the invention to construct the mechanism so that in lieu of one spring as is commonly employed, a plurality of spring elements is provided.

With the above and other objects in view, reference is had to the accompanying drawings, in whichv Figure 1 is a longitudinal sectional view of a fountain pen equippedwith the new and improved sac-collapsing mechanism, the latter being shown with the sac in extended position;

Fig. 2

is a similar view showing the mechanism in the position which it assumes when the sac is collapsed thereby; Fig. 3 is aA disassembled perspective view of the sac-collapsing mechanism;

Fig. 4 is a longitudinal sectional view showing the mannerin which the partsv of the sac-collapsing mechanism are assembled.

Referring more specifically to the drawings, the reference character 5 designates the fountain vpen barrel, and 6 the neck, which in the type shown has screw-threaded engagement, as at 7, with the barrel 5. Slidably mounted in the ordinary manner in the rear end of the fountain pen barrel 5, is a hollow plunger, or the like, 8, provided with a' resser, button 9, which. exf tends beyond t e barrel as shown. Carried b the vneck 6 and mounted interiorly of t e' barrelV 5, yis the ink reservoir 1() and said reservoir is preferably of the ordina construction which consists of a collapsib e rubber sac.

The reference character 11 designates the presser bar, 12 designating one of the resilient elements adapted to operate the presser bar, the other resilient element being shown at 13. The resilient element 13 has an oset portion 14, and projecting from said offset portion 14 is an' end member 15, which is arcuate in cross sectional form. This` end member 15 is adapted to be received within the hollow plunger 8, as shown in Figs. 1 and 2... The presser bar 11 is provided with two oppositely-disposed tongues 16, preferably struck from the body portion thereof, and during the operation of striking out said tongues 16 the metal which constitutes said tongues is stretched and each tongue is formed with an arched portion 17. Each of the resilient members 12 and 13 is provided with an elon ated cut-out portion 18, and these elongat cut-out portions 18 are adapted to receive their res 'ective tongues of the presser bar 11 when t e several parts are assembled. Each of the resilient members 12and 13 is provided with a bifurcated end 19 and the furcationsl of each of said bifurcated ends are turned or bent upwardly-to provide a curved bottom vsurface 21. By providing the elongated cut-out ortions 18 and the bifurcated ends 19, it wi l be seen that an intervening cross-bar 22 is formed in each of the resilthe several parts this intervening cross bar of each resilient member is adapted to be received in?` the 'arched portion 17 of its respective tongue of the presser bar to form a pivotal mounting for its respective resilientmember. f

In assemblin the device, the resilient members 12 an 13 are passed under their respective tongues 16 until the cross bar of each member occupies a position below the arched portion 17 of its respective tongue 16. After the parts have been so positioned, the tongues 16 are inserted into the openings which result from the formation of the tongues and are swaged into engagement with the side walls of said' openings to secure the to-ngues in position.y

This construction provides for pivotally mounting the resilient members 12 and 13, and the curved faces 21 heretofore mentioned aid the resilient members 12 and 13 in rocking about their pivotal points.

When the improved mechanism is inserted in a pen, as shown in` the drawings,and the presser button 9 is depressed, 'the resilient` members are sprung as shown in Fig.y 2, and

:lue to their pivotal connection with y the` presser bar, said presser baris at all times in' position parallelv ,with thel longitudinal axis of the barrelf5 of the'pen, ,thus serving to' give a complete collapsing of the sac 10 y for the purpose desired.

Due to the inherent tendency7 `of thefresilient members to lresume their normal posiy tion and the pivotal connection between` these mem-bers and the presser bar, as soon as pressure is released from the presser vbutton y9, the mechanism assumes its normal position under the influence of the resilient members rather than under the influence of the fluid,

entering and filling the sac.

i From the foregoing it 1s apparent that thepresent invention provides a new and improved pressure mechanism forV fountain pens, and that such mechanism has advantages over that type of mechanism wherein the resiliency is obtained from a single re'- rigidlyconnected as by rivets or the like.

v hat is claimed is:

1. In a mechanism of the class described, a single presser bar, and a plurality of iesilient elements, said resilient elements being pivotally connected with,v the presser bar and having sliding movement relative thereto.

2. In a mechanism of the class'described, a presser bar, a plurality of tongues struck from the body portion of saidpresser bai', and lresilient members pivotally and slidably mounted in 'said tongues.

3. In a mechanism of the class described, a presser bar, a plurality of tongues struck from said bar, a plurality of resilient elements, each of said resilient elements having an elongated slot `Yformed therein and adapted to receive its respective tongue of the presser bar to form a pivotal and sliding connection between the resilient members and the presser bar.

,4. A mechanism Vof the class described comprising a presser bar,"a plurality of oppositelydisposed tongues'struck from the body portion of said presser'bar, a resilient member having an elongated slot adapted to receive'Y one of said tongues to provide a pivotal and sliding connection between the resilient lmember and the presser bar, a second ,resilient member having an elongated slot adapted to receive the other of said tongues to yprovide a pivotal and sliding connection between the second-mentioned iesilient member and the presser bar, and an `offset portion formed on one of said resliding movement of all the arts.

` WALTER GUYOT. 

